Home / 27,878.16-38,464.38-16,538.20

Finding the Fourth Proportional to 27,878.16, 38,464.38 and 16,538.20

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Solution

The fourth proportional to 27,878.16, 38,464.38 and 16,538.20 is: 22,818.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.16 : 38,464.38 = 16,538.20 : x
  2. Step 2: Convert to fraction form
    27,878.16/38,464.38 = 16,538.20/x
  3. Step 3: Cross multiply
    27,878.16x = 38,464.38 × 16,538.20
  4. Step 4: Simplify right side
    27,878.16x = 636,131,609.32
  5. Step 5: Solve for x
    x = 636,131,609.32/27,878.16
  6. Step 6: Final answer
    x = 22,818.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.